1. capable of being injured; open to attack; sensitive to criticism, influences, etc. آسیب پذیر ، در معرض حمله ، حساس به انتقاد ، اثرات و غیره a. Achilles was vulnerable only in his heel. b. The investigator's nimble mind quickly located the vulnerable spot in the defendant's alibi. c. A vulnerable target for thieves is a solitary traveler.